Temporary power provider Aggreko said revenues at both its divisions had
jumped more than 20pc in the first quarter of the year, sending its shares
charging more than 3pc higher.

The Glasgow-based group, which has supplied power to events including the Glastonbury music festival, said the business had a "very strong" first quarter. Aggreko also provided power for the Asian Games in 2011 and will service the London Olympics later this year. The company also said it expected revenues from London 2012 would now be about £50m instead of the previously expected £35m.

Its International Power Projects unit, which provides heating and cooling equipment to governments and corporations across the world, saw revenues rise 21pc, excluding revenues from major events.

The local businesses, which hire equipment out regionally for nearby customers, also saw revenues jump 21pc, excluding fuel costs, which are passed on to customers.

Aggreko, whose chief executive is Sir Winston Churchill's grandson Rupert Soames, also unveiled a new contract to supply 100 megawatts of power generation in the Dominican Republic. The two-year contract, worth $80m (£50m), will supply capacity in the north of the country.

"This will improve the stability of the national grid which has had to deal with rapidly increasing demand due to the rapid economic growth of the country"," Mr Soames said.